805259012 has 12 divisors (see below), whose sum is σ = 1409916060. Its totient is φ = 402425856.

The previous prime is 805258919. The next prime is 805259023. The reversal of 805259012 is 210952508.

It can be written as a sum of positive squares in 2 ways, for example, as 409010176 + 396248836 = 20224^2 + 19906^2 .

It is a super-2 number, since 2×805259012² = 1296884152814432288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 805259012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41837 + ... + 57972.

It is an arithmetic number, because the mean of its divisors is an integer number (117493005).

Almost surely, 2^805259012 is an apocalyptic number.

It is an amenable number.

805259012 is a deficient number, since it is larger than the sum of its proper divisors (604657048).

805259012 is a wasteful number, since it uses less digits than its factorization.

805259012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101830 (or 101828 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 805259012 is about 28377.0860378581. The cubic root of 805259012 is about 930.3475064692.

The spelling of 805259012 in words is "eight hundred five million, two hundred fifty-nine thousand, twelve".